论文标题
带有亚纳光场局部限制的全磁纳米仪
All-Dielectric Nanolaser with Subnanometer Field Confinement
论文作者
论文摘要
具有超视空间限制的激光场的能力对于突破光学科学和技术的极限至关重要。尽管等离子激光器可以提供亚分配限制的激光场，但它受到金属光限制和自由电子振荡损失之间的权衡而受到限制。我们在这里展示了一个可以避免限制权衡的全型纳米剂，并将野外限制降低到亚纳米级水平。在耦合的CDS纳米线对围绕1 nm宽度缝隙的极化结合电子的低静止振荡支持的超固定激光场表现为TE0型激光模式的主要峰值，在520-nm波长左右，在520-nm波长左右，在野外限制范围内，并降低了0.23 nm和0.23 nm和evernd peak afep的峰值。该激光器可能会为纳米射手和轻度互动的新区域铺平道路。
The ability to generate a laser field with ultratight spatial confinement is important for pushing the limit of optical science and technology. Although plasmon lasers can offer sub-diffraction-confined laser fields, it is restricted by a trade-off between optical confinement and loss of free-electron oscillation in metals. We show here an all-dielectric nanolaser that can circumvent the confinement-loss trade-off, and offer a field confinement down to subnanometer level. The ultra-confined lasing field, supported by low-loss oscillation of polarized bound electrons surrounding a 1-nm-width slit in a coupled CdS nanowire pair, is manifested as the dominant peak of a TE0-like lasing mode around 520-nm wavelength, with a field confinement down to 0.23 nm and a peak-to-background ratio of ~32.7 dB. This laser may pave a way towards new regions for nanolasers and light-matter interaction.
